-- @testpoint: opengauss关键字within(非保留)，作为函数名，部分测试点合理报错

--关键字不带引号-成功
drop function if exists within;
create function within(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists within;
--关键字带双引号-成功
drop function if exists "within";
create function "within"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists "within";
--关键字带单引号-合理报错
drop function if exists 'within';
create function 'within'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `within`;
create function `within`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
